Gerolamo Olgiati

Gerolamo Olgiati (1453-2 January 1477) was an official of the Duchy of Milan who assassinated Galeazzo Maria Sforza alongside Giovanni Andrea Lampugnani and Carlo Visconti.

Biography
Gerolamo Olgiati attended mass at Santo Stefano in Milan on 26 December 1476 alongside Giovanni Andrea Lampugnani and Carlo Visconti, hoping to assassinate the unpopular Galeazzo Maria Sforza. He stabbed Sforza in the back after Lampugnani stabbed him in the chest, and escaped, but was captured a week later and executed by hanging.